update folders

snipplets/code/C/libserialport/.editorconfig

@@ -0,0 +1,6 @@
+[{clear,build,format-code}]
+indent_style = space
+indent_size = 4
+
+[{*.c,*.ino}]
+indent_size = 2

snipplets/code/C/libserialport/.gitignore

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+# libserialport examples
+port_info.c
+list_ports.c
+send_receive.c
+
+# binaries
+port_info
+list_ports
+send_receive
+
+listen
+abc.txt

snipplets/code/C/libserialport/Board/.gitignore

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+3party/

snipplets/code/C/libserialport/Board/Board.ino

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+/*
+  Author: Alexander Popov
+  License: Unlicense
+*/
+
+#include "3party/AsyncStream.h"
+AsyncStream<50> serial(&Serial, '\n');
+
+void setup() {
+  Serial.begin(9600);
+}
+
+void loop() {
+  if (strcmp(serial.buf, "ping") == 0) {
+    Serial.println("PONG");
+  }
+
+  Serial.println("ooooo");
+  // delay(1000);
+  Serial.println("zzzz");
+  // delay(1000);
+  Serial.println("xxx");
+  // delay(1000);
+}

snipplets/code/C/libserialport/Board/README.md

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+Download `AsyncStream.h` from
+https://github.com/GyverLibs/AsyncStream
+and drop in to `3party` folder.

snipplets/code/C/libserialport/README.md

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+Download `libserialport` library.
+
+```sh
+git clone git://sigrok.org/libserialport
+```
+
+For **build** code use `build` script or build files manually.
+
+Example:
+
+```sh
+export C_INCLUDE_PATH=<path/to/libserialport>
+export LIBRARY_PATH=<path/to/libserialport/.libs>
+
+gcc -static -Wall -O3 -o <output_filename> <file.c> -lserialport
+```
+
+Arduino example project store in `Board` folder.

snipplets/code/C/libserialport/build_gcc

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+#!/bin/sh
+#
+# build - script for build all files.
+#
+# Alexander Popov <iiiypuk@fastmail.fm>
+
+export C_INCLUDE_PATH=$HOME/Git/libserialport
+export LIBRARY_PATH=$HOME/Git/libserialport/.libs
+
+for file in \
+    port_info.c \
+    list_ports.c \
+    send_receive.c \
+    listen.c \
+
+do
+    echo -ne "[  ] Building $file...\r"
+    gcc -static -Wall -O3 -o ${file%.*} $file -lserialport
+    echo [OK
+done

snipplets/code/C/libserialport/build_tcc

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+#!/bin/sh
+#
+# build - script for build all files.
+#
+# Alexander Popov <iiiypuk@fastmail.fm>
+
+export C_INCLUDE_PATH=$HOME/Git/libserialport
+export LIBRARY_PATH=$HOME/Git/libserialport/.libs
+
+for file in \
+    port_info.c \
+    list_ports.c \
+    send_receive.c \
+    listen.c \
+
+do
+    echo -ne "[  ] Building $file...\r"
+    tcc -Wall -O3 -o ${file%.*} -I$C_INCLUDE_PATH $file $LIBRARY_PATH/libserialport.a
+    echo [OK
+done

snipplets/code/C/libserialport/clear

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+#!/bin/sh
+#
+# clear - script for delete all builded files.
+#
+# Alexander Popov <iiiypuk@fastmail.fm>
+
+files=(
+    "port_info"
+    "list_ports"
+    "send_receive"
+    "listen"
+)
+
+for file in ${files[@]}
+do
+    rm $file &> /dev/null
+done

snipplets/code/C/libserialport/format-code

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+#!/bin/sh
+#
+# formt-code - script for beautify code by clang-format.
+#
+# Alexander Popov <iiiypuk@fastmail.fm>
+
+files=(
+    "listen.c"
+)
+
+for file in "${files[@]}"
+do
+    clang-format -i --style=LLVM --sort-includes=false $file
+done

snipplets/code/C/libserialport/listen.c

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+#include <libserialport.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <signal.h>
+
+/* Helper function for error handling. */
+int check(enum sp_return result);
+void handle_sigint(int sig);
+
+bool INTERRUPT = false;
+
+int main(int argc, char **argv) {
+  struct sp_port *serial_port;
+  char *port_name;
+
+  const int size = 256;
+  char *buffer = malloc(size + 1);
+
+  const unsigned int timeout = 1000;
+  int result;
+
+  /* Get the port name from the command line. */
+  if (argc != 2) {
+    printf("Usage: %s <port>\n\n", argv[0]);
+
+    struct sp_port **port_list;
+    enum sp_return result = sp_list_ports(&port_list);
+
+    /* Getting the available ports. */
+    if (result != SP_OK) {
+      puts("Getting available ports failed!");
+    } else {
+      puts("Available ports:");
+
+      int i;
+      for (i = 0; port_list[i] != NULL; i++) {
+        /* Get the name of the port. */
+        struct sp_port *port = port_list[i];
+        char *port_name = sp_get_port_name(port);
+
+        printf("  * %s\n", port_name);
+      }
+
+      printf("\nAvailable %d ports.\n", i);
+
+      sp_free_port_list(port_list);
+    }
+
+    return -1;
+  } else {
+    port_name = argv[1];
+  }
+
+  printf("Connecting to '%s'...\n", port_name);
+  check(sp_get_port_by_name(port_name, &serial_port));
+  check(sp_open(serial_port, SP_MODE_READ_WRITE));
+
+  check(sp_set_baudrate(serial_port, 9600));
+  check(sp_set_bits(serial_port, 8));
+  check(sp_set_parity(serial_port, SP_PARITY_NONE));
+  check(sp_set_stopbits(serial_port, 1));
+  check(sp_set_flowcontrol(serial_port, SP_FLOWCONTROL_NONE));
+  puts("Connected.");
+
+  signal(SIGINT, handle_sigint);
+
+  FILE *output_file;
+  output_file = fopen("./abc.txt", "w");
+
+  /* Reading lines from serial port. */
+  bool reading = true;
+  while (reading && !INTERRUPT) {
+    int pos = 0;
+
+    /* Character-by-character reading. */
+    while (pos < size) {
+      result = check(sp_blocking_read(serial_port, buffer + pos, 1, timeout));
+
+      if (result == -1) {
+        puts("Error reading from serial port");
+
+        reading = false;
+        break;
+      } else if (result == 0) {
+        puts("No more data");
+        break;
+      } else {
+        if (buffer[pos] == '\n') {
+          buffer[pos] = '\0';
+          break;
+        }
+
+        pos++;
+      }
+    }
+
+    puts(buffer);
+    fputs(buffer, output_file);
+  }
+
+  fclose(output_file);
+  free(buffer);
+
+  return 0;
+}
+
+/* Helper function for error handling. */
+int check(enum sp_return result) {
+  char *error_message;
+
+  switch (result) {
+  case SP_ERR_ARG:
+    puts("Error: Invalid argument.");
+    abort();
+  case SP_ERR_FAIL:
+    error_message = sp_last_error_message();
+    printf("Error: Failed: %s\n", error_message);
+    sp_free_error_message(error_message);
+    abort();
+  case SP_ERR_SUPP:
+    puts("Error: Not supported.");
+    abort();
+  case SP_ERR_MEM:
+    puts("Error: Couldn't allocate memory.");
+    abort();
+  case SP_OK:
+  default:
+    return result;
+  }
+}
+
+void handle_sigint(int sig) { INTERRUPT = true; }